Petr Beaupre is the main antagonist of the 1997 family comedy film Home Alone 3. He is the leader of the gang of internationally wanted criminals, the other three being are Alice Ribbons (the sole female), Burton Jernigan, and Earl Unger and Alex's archenemy.
Beaupre searches for the toycar with the computer chip in the houses on Alex's block while Alice, Jernigan and Unger keep a lookout but is foiled by Alex when he telephones the police. When the robbers find out that Alex has the toycar and the chip and go after them he steps into several traps.
Beaupre finally outsmarts Alex by hiding in the neighbour Mrs Hess's garage and captures him when he comes to release her and threatens him at gunpoint to hand over the chip, but Alex reminds him that he has the wrong gun, which is proven correct when Beaupre pulls the trigger releasing the suction dart. By the time Beaupre realizes his mistake, Alex holds him at gunpoint with a bubble gun disguised as real gun and succeeds in scaring him off with it.
When the authorities arrive to arrest the criminals, FBI Agent Stuckey shows Alex the picture of Beaupre and states that he has been after him for awhile. He is eventually arrested when fireworks are detonated in the ice fortress by the family parrot.
In the final scene, Beaupre and his accomplices are getting their mugshots taken where they have caught Alex's chickenpox.
- Taking into account what his goals are and his desire for murder, Petr Beaupre is easily considered the most dangerous Home Alone villain. That said, Beaupre is likewise the only antagonist of the franchise who managed to set up a trap for the protagonist.
- He is somewhat in a relationship with Alice.